Batteries Therm-ic S-Pack 2400

Batteries Therm-ic S-Pack 2400 are the new generation of batteries for Therm-ic heated socks. They offer up to 14 hours of heating, three heat levels and USB-C charging. They are compact, resistant to splashing water and dust, and designed for heated ski and outdoor socks with S.E.T. or Fusion technology.

Heating time

• Level 1: up to 14 hours

• Level 2: up to 6 hours

• Level 3: up to 4 hours

Key features of the S-Pack 2400 batteries

• Three heat levels – easily set the amount of heat you need.

• USB-C charging – the supplied cable has two connectors for charging both batteries at once, which takes about 3 hours 30 minutes.

• Durable construction – the batteries resist splashing water and dust.

• Secure connection – patented snap buttons ensure a firm connection to the socks.

Which socks to use the batteries with

The batteries are designed for heated socks from the Therm-ic brand with S.E.T. or Fusion technology, for example Ultra Warm Comfort S.E.T, Ultra Warm Performance S.E.T or Ultra Warm Nordic S.E.T. If you are looking for other power options, take a look at the S-Pack 1200 or S-Pack 1400 Bluetooth batteries. Our article on how to choose heated socks for winter activities or the socks category may help too.

Battery care

• Store the batteries in a cool place at 5 to 20 °C.

• Before long-term storage they should be about half charged.

• Charge and discharge the batteries regularly.

• Disconnect them from the socks before storing or cleaning.

• Clean them with a soft cloth.